We assume that the number 30000 is 100% because it's the output value of the task. We assume that x is the value we are looking for If 30000 is 100% so we can write it down as 30000=100% We know that x is 30% of the output value so we can write it down as x=30%. Now we have two simple equations 1) 30000=100% 2) x=30% where left sides of both of them have the same units and both right sides have the same units so we can do something like that 30000/x=100%/30% Now we just have to solve the simple equation and we will get the solution we are looking for Solution for what is 30% of 30000
30000/x=100/30 (30000/x)*x=(100/30)*x we multiply both sides of the equation by x 30000=3.33333333333*x we divide both sides of the equation by (3.33333333333) to get x 30000/3.33333333333=x 9000=x x=9000
